[nrjames]

Yep, I'm well aware of all of that because I sit on our "Cloud Technology Advisory Committee," which feels like a scene from Brazil. However, many here work with sensitive PHI and various types of classified data, so the concerns are bound to contractual agreements with clients and our ability to win work is contingent upon standing up to audits that verify our claims regarding data ownership, security, etc. I wouldn't argue that makes it more secure, but it's the reality of the business.

[yeukhon]

Certainly. Another option is HipChat, which you can host on-premise. I actually prefer HipChat because of the simplistic UI. Now both Slack and HipChat support video call is a great plus because I don't have to switch between tools. Slack UI is noisy to me, but the growing ecosystem is fantastic. Ugh.